PowerBook G4 crashes in sleep mode

BParis · #1 July 6th, 2009, 10:21 AM

Hi,
I've a problem with my PowerBook G4 (12-inch DVI and Mac OS X 10.4.11). When I close the lid or when I manually try to make it sleep from the apple menu, it goes into sleep mode put only for 1 second and then shuts off (crashes). So instead of being able to wake up the computer, I have to boot it up from off.

Can anyone help me with this problem ?
Thanks in advance for the help !

Jesse714 · #2 July 6th, 2009, 01:29 PM

Do you mean completley off, or when you open it back up again, you have to push the power button and boot back up?
Try a PRAM, And NVRAM Reset

BParis · #3 July 7th, 2009, 06:24 PM

Thank you for your answer.

Yes, when I close the lid, my PowerBook is completly off.
I tried to reset the PMU, the PRAM and the NVRAM. Unfortunately ... nothing changed.

Jesse714 · #4 July 7th, 2009, 06:56 PM

Have you checked your Energy options?

System Preferences>Energy Saver.

I don't think thats your problem though, Maybe you need to actually change your PMU battery.